Question

I can't figure out ________ it is that makes him so difficult at school.

A． how B．what

C．why D．which

 

Answer 1

B

【解析】B 考察强调句型和宾语从句的语序。What it be that强调句式中的强调的是主语，首先要排除how,why，又因为预计中的主语是泛指意义，排除which，有范围。故使用what。